The 2014 edition, which premieres on March 17, will feature the return of pro Maksim Chmerkovsky, the addition of co-host Erin Andrews replacing Brooke Burke-Charvet, and former "American Idol" music director Ray Chew in place of longtime band leader Harold Wheeler.

Purdy, who has also appeared on "The Amazing Race," is the first contestant with prosthetic legs to be featured on "DWTS." She had both of her legs amputated below the knee due to a form of bacterial meningitis she had when she was 19 years old. Heather Mills was the first person to compete with a prosthetic limb back in 2007. Purdy is paired with reigning champ and five-time winner Derek Hough.

The network also announced that the show will introduce a new twist this season where fans will vote for partner swaps for one week.

The "Dancing With the Stars" Season 18 couples are:

Amy Purdy and Derek Hough

Billy Dee Williams and Emma Slater

Candace Cameron Bure and Mark Ballas

Charlie White and Sharna Burgess

Cody Simpson and Witney Carson

Danica McKellar and Valentin Chmerkovskiy

Diana Nyad and Henry Byalikov

Drew Carey and Cheryl Burke

James Maslow and Peta Murgatroyd

Meryl Davis and Maksim Chmerkovskiy

NeNe Leakes and Tony Dovolani

Sean Avery and Karina Smirnoff

"Dancing With the Stars" Season 18 premieres Monday, March 17 at 8/7 p.m. CT on ABC.